ENTRY 40378 20220216 42044037800000001 SUBENT 40378001 20220216 42044037800100001 BIB 17 34 4037800100002 TITLE Measurement of effective cross section for the fission 4037800100003 of 252Cf by fast reactor neutrons 4037800100004 AUTHOR (Eh.F.Fomushkin,E.K.Gutnikova,G.F.Novoselov,V.I.Panin) 4037800100005 REFERENCE (J,SJA,40,202,1976) Engl.translation of AE,40,176,1976.4037800100006 #doi:10.1007/BF01118713 4037800100007 (J,AE,40,176,1976) Issue 2. 4037800100008 (P,YFI-21,7,1976) Data given 4037800100009 (R,INDC(CCP)-111,5,1978) 4037800100010 English translation of YFI-21,p.7,1976 4037800100011 INSTITUTE (4RUSKUR) 4037800100012 FACILITY (REAC,4RUSKUR) Fast pulsed reactor 4037800100013 INC-SOURCE (REAC) 4037800100014 SAMPLE Cf-252 - 79.8%, Cf-251 - 3.8%, Cf-250 - 10.9%, 4037800100015 Cf-249 - 5.5%. 4037800100016 METHOD (FISCT) Method of direct registration of fission 4037800100017 fragments was used. 4037800100018 A Np-237 layer was irradiated simultaneously with 4037800100019 Cf-252 layer. 4037800100020 DETECTOR (GLASD) Glass detector for fission fragments 4037800100021 MONITOR (93-NP-237(N,F),,SIG) 4037800100022 No numerical value in the articles. 4037800100023 MONIT-REF (,W.G.Davey,J,NSE,32,35,1968) 4037800100024 ANALYSIS It was assumed that the fission cross sections of 4037800100025 Cf-249 and Cf-251 are 2.01+-0.13 b, 4037800100026 cross sections of Cf-250 and Cf-252 are equal. 4037800100027 ASSUMED (ASSUM,98-CF-249(N,F),,SIG,,FST) 4037800100028 REL-REF (R,40031006,E.F.Fomushkin+,J,YF,14,73,1971) 4037800100029 Cross sections for Cf-249 and Cf-251. 4037800100030 CORRECTION Spontaneous fission background was estimated to be 4037800100031 ~10.%. 4037800100032 ERR-ANALYS Relative error in isotopic content determination < 3.%4037800100033 HISTORY (19770211C) 4037800100034 (20220215A) Update for current rules and dictionaries. 4037800100035 Refs. INDC(CCP), AE,40,176, SJA,40,202 were added. 4037800100036 ENDBIB 34 0 4037800100037 COMMON 2 3 4037800100038 ASSUM ASSUM-ERR 4037800100039 B B 4037800100040 2.01 0.13 4037800100041 ENDCOMMON 3 0 4037800100042 ENDSUBENT 41 0 4037800199999 SUBENT 40378002 20220216 42044037800200001 BIB 5 11 4037800200002 REACTION (98-CF-252(N,F),,SIG,,SPA) 4037800200003 INC-SPECT Reactor neutron spectrum was close to the fission 4037800200004 spectrum, somewhat softened as a result of inelastic 4037800200005 scattering. 4037800200006 REL-REF (A,10323002,M.S.Moore+,J,PR/C,4,273,1971) 4037800200007 After averaging for fast neutron spectrum. 4037800200008 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 4037800200009 article. 4037800200010 STATUS (TABLE) Text page 203 of Sov.At.Energy,v.40,p.202,1976.4037800200011 Text page 5 of INDC(CCP)-111,5,1978 - 4037800200012 English translation of YFI-21,p.7,1976. 4037800200013 ENDBIB 11 0 4037800200014 NOCOMMON 0 0 4037800200015 DATA 3 1 4037800200016 EN-DUMMY DATA DATA-ERR 4037800200017 MEV B B 4037800200018 1. 1.58 0.14 4037800200019 ENDDATA 3 0 4037800200020 ENDSUBENT 19 0 4037800299999 ENDENTRY 2 0 4037899999999